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Touch pressure sensor and touch pressure switch

A touch pressure, sensor technology, applied in the field of sensors

Pending Publication Date: 2018-08-17
SHANGHAI KOSTAL HUAYANG AUTOMOTIVE ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In similar application scenarios, it is no longer applicable to conventional touch sensors in the prior art

Method used

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  • Touch pressure sensor and touch pressure switch
  • Touch pressure sensor and touch pressure switch

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Experimental program
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Effect test

Embodiment Construction

[0024] The core of the present invention is to provide a touch pressure sensor. In the prior art, the user only needs to touch or approach the surface of the capacitive touch sensor with a finger to activate the touch sensor, which can easily cause false triggering of the touch sensor, thereby reducing the safety.

[0025] A touch pressure sensor provided by the present invention includes a first electrode layer, a second electrode layer and a third electrode layer arranged at intervals in sequence; wherein the first electrode layer includes at least one conductive film layer, and the second electrode layer and Capacitors are formed between the third electrode layers; and a second isolation layer is arranged between the second electrode layer and the third electrode layer, and an air gap is arranged in the second isolation layer. The above-mentioned first electrode layer includes a conductive film layer, which can form a capacitance between the part touched by the user in the...

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Abstract

The invention discloses a touch pressure sensor. A capacitance can be formed between a first electrode layer and a part touched by a user, thereby realizing the positioning of a touch area of the user; and meanwhile, when the user presses the touch pressure sensor, the magnitude of a capacitance between a second electrode layer and a third electrode layer can be changed, so that the detection of the magnitude of the pressing force of the user can be achieved. The touch pressure sensor can detect the magnitude of the pressing force of the user while positioning the touch area of the user, thereby reducing the false trigger rate of the touch pressure sensor. And meanwhile, a signal for positioning the touch area of the user and a signal for detecting the magnitude of the pressing force of the user are distributed on different signal lines, so that the redundancy of the signals can be realized, and the reliability of the touch pressure sensor can be improved. The invention further provides a touch pressure switch, which also has the above beneficial effects.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a touch pressure sensor and a touch pressure switch. Background technique [0002] With the continuous advancement of technology and the development of the touch industry in recent years, the application range of touch sensors is becoming wider and wider. [0003] At present, touch sensors are usually capacitive touch sensors. Although the capacitive touch sensor has the advantages of wear resistance, long life, and low maintenance cost, the user only needs to touch or approach the capacitive touch sensor with a finger during the use of the capacitive touch sensor. surface, the touch sensor can be activated, which can easily cause false triggering. In some specific application scenarios, such as in-vehicle systems, the requirements for hardware security are relatively high. In similar application scenarios, it is no longer applicable to conventional touch sensors in the prior ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K17/96
CPCH03K17/962H03K2217/96071
Inventor 赵胜周虎
Owner SHANGHAI KOSTAL HUAYANG AUTOMOTIVE ELECTRIC
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